HOW TO INSTALL MOD:
1. download Delta Patcher
https://github.com/marco-calautti/DeltaPatcher/releases


2. Find your Deltarune Chapter 3 "data.win" file

To get to your Deltarune folder:
If you got Deltarune from steam, right click it in your library, hover over "Manage", and choose "Browse local files"
If you got Deltarune from not steam, ummm, hopefully you know how to get to your Deltarune folder

DONT use the data.win that's in the main folder. Click on the "chapter3" folder and use the data.win file in there.

MAKE A COPY OF YOUR DATA.WIN FILE
We'll be directly, permanently modifying the file. So, you'll need a backup of it to go back to if you want to remove the mod.


3. Drag the Chapter 3 "data.win" file into the box in Delta Patcher that says "Original File"


4. Drag "ramb beats you up.xdelta" from the folder for the mod into the box in Delta Patcher that says "XDelta patch"


5. Click "Apply patch" and that'll modify your "data.win" to infect it with Ramb.


6. "ramb_boss.ogg" is the boss theme. In the main Deltarune folder, there should be a subfolder titled "mus". Drag "ramb_boss.ogg" from the mod folder into the "mus" folder.
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WHAT ABOUT THE SAVE FILES?
The save files, all titled "filech3_0", will help you skip to the actual mod content.


The main, unlabeled save file will just skip you straight to the fight, bypassing the normal sword route stuff you'd have to do

"annoying uncompromised save" will place you at the right progression in the game, but you'll still have to do the sword route minigame leading into the fight.

"EVIL SAVE FILE" is the same as the main one but with the Weird Route completed, so you can see the Weird Route exclusive content (Not intended for a first playthrough)
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HOW TO MODIFY SAVE DATA:
1. Go to "%localappdata%/deltarune" in your file explorer.


2. MAKE A BACKUP OF YOUR CURRENT "filech3_0" SAVE FILE
You can just make a duplicate of it and leave it in the folder.
Whenever you want to go back to your original save, just delete the mod save file and change your backup from "filech3_0 - Copy" to just "filech3_0"


3. Copy the desired save file from the mod folder into the "%localappdata%/deltarune" folder and replace the existing "filech3_0" save.
BUT ONLY AFTER YOU MADE A BACKUP OF IT I DONT WANT YOU TO LOSE YOUR ORIGINAL SAVE FILE PLEASE THIS IS DIRE

4. The save select screen will still display the old information of your save file, but that's only a display issue. The new save file will load properly.
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Now it's done :D
Boot up your deltarune, go to the first save file of Chapter 3, and have fun with the mod (hopefully)!